sapo-34 molecular sieve and preparation method and application of an adjustable pore size

Disclosed after SAPO-34 molecular sieve and preparation method and application of a microporous adjustable aperture, an inert organic solvent is added to the SAPO-34 molecular sieve, then was added as a readily hydrolyzable halide precipitation agent, the reaction 2 ~ 10h filtering and drying, is obtained after calcination adjustable pore size of SAPO-34; the application of the SAPO-34 molecular sieve as a catalyst for the conversion of oxygenates preparing lower olefins (MTO) in. SAPO-34 as compared to aperture modulation method and chemical deposition method such as silicone esters of the present invention provides, with simple, cheap, reliable and widely repeated scope zeolite, etc. suitable for industrialization; After this modulation method zeolite the surface properties and pore volume did not change, and the precision adjustable orifice size, geometry and various organic mixture of similar polarity system exhibited good shape-selective separation performance, can be used for the separation of organic chemicals and purification.